Пошаговое объяснение:
18/30 - х = 4/30 + 6/30
18/30 - х = 10/30
х = 18/30 - 10/30
х = 8/30
(13/67 + 6/67) - х = 9/67
19/67 - х = 9/67
х = 19/67 - 9/67
х = 10/67
10/15 + (5/15 - х ) = 14/15
5/15 - х = 14/15 - 10/15
5/15 - х = 4/15
х = 5/15 - 4/15
х = 1/15
34/60 + 8/60 + у = 41/60 + 16/60
42/60 + у = 57/60
у = 57/60 - 42/60
у = 15/60
64/70 - (х + 26/70) = 5/70
х + 26/70 = 64/70 - 5/70
х + 26/70 = 59/70
х = 59/70 - 26/70
х = 33/70
х + 27/46 = 35/46 + 2/46
х + 27/46 = 37/46
х = 37/46 - 27/46
х = 10/46
Пошаговое объяснение:
18/30 - х = 4/30 + 6/30
18/30 - х = 10/30
х = 18/30 - 10/30
х = 8/30
(13/67 + 6/67) - х = 9/67
19/67 - х = 9/67
х = 19/67 - 9/67
х = 10/67
10/15 + (5/15 - х ) = 14/15
5/15 - х = 14/15 - 10/15
5/15 - х = 4/15
х = 5/15 - 4/15
х = 1/15
34/60 + 8/60 + у = 41/60 + 16/60
42/60 + у = 57/60
у = 57/60 - 42/60
у = 15/60
64/70 - (х + 26/70) = 5/70
х + 26/70 = 64/70 - 5/70
х + 26/70 = 59/70
х = 59/70 - 26/70
х = 33/70
х + 27/46 = 35/46 + 2/46
х + 27/46 = 37/46
х = 37/46 - 27/46
х = 10/46